Question 71
The lengths of the parallel sides of a trapezium are 10 cm and 20 cm. If the distance between these parallel lines is 5 cm, then what is the area of the trapezium?
Solution
area of the trapezium = $$\frac{1}{2}\times$$ sum of the lengths of the parallel sides of a trapezium $$\times$$ distance between parallel sides
The lengths of the parallel sides of a trapezium are 10 cm and 20 cm. If the distance between these parallel lines is 5 cm.
area of the trapezium = $$\frac{1}{2}\times(10+20)\times5$$
= $$\frac{1}{2}\times 30 \times5$$
= $$15\times5$$
= 75 $$cm^2$$
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